RailsCasts Pro episodes are now free!

Learn more or hide this

Logging Variables

#86 Logging Variables

Dec 30, 2007 | 6 minutes | Debugging, Tools
Have you ever wanted to easily log all variables? Now you can by using some advanced Ruby concepts as shown in this episode.
Click to Play Video ▶
  • Download:
  • mp4Full Size H.264 Video (8.71 MB)
  • m4vSmaller H.264 Video (6.21 MB)
  • webmFull Size VP8 Video (18.8 MB)
  • ogvFull Size Theora Video (11.6 MB)

Resources

models/product.rb 
logger.debug_variables(binding)
config/initializers/logger_additions.rb 
logger = ActiveRecord::Base.logger
def logger.debug_variables(bind)
  vars = eval('local_variables + instance_variables', bind)
  vars.each do |var|
    debug  "#{var} = #{eval(var, bind).inspect}"
  end
end